Board Thread:General Discussion/@comment-26222858-20150917141812/@comment-26222858-20151019153116

It's obviously implied, his normal DT isn't even his full power. Majin Form, on the other hand, could obviously be all of his power at once, hence why bits and pieces of him in Majin Form are similar to other demons' appearance such as Sparda, Vergil, and in very small spots, Nelo Angelo. (Note that I said similar, not alike.)